(Newser)
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Police are hunting a pair of brazen "ninja" robbers in black wielding pickaxes who burst into a Sierra Nevada Gold Rush Museum in broad daylight and escaped with $2 million in gold and gems. No workers or visitors were injured, and the crooks failed to grab the biggest prize—a 14-pound crystalline gold "nugget"—at the Mariposa museum. “There’s just a lot of irreplaceable things that we’ll never get back that have been around since the Gold Rush days in this town,” a resident told CBS-TV in Sacramento. Earlier this year thieves grabbed large chunks of gold on display in a Siskiyou County courthouse. (Read more gold rush stories.)